Rocky Mountain spotted fever (RMSF) is the most serious of the rickettsial (rih-KET-see-ul) infections, diseases caused by bacteria from the Rickettsiaceae family. These bacteria typically spread to people through blood-sucking parasites * such as ticks and fleas.

Rocky Mountain spotted fever is considered infectious but is not transmitted from person to person. Generally, a disease like this is caused by an infectious agent and not spread between people. Rocky Mountain spotted fever, although infectious, is not a genetic disease.

Rocky Mountain spotted fever (RMSF) is a bacterial infection spread by a bite from an infected tick. It causes vomiting, a sudden high fever around 102 or 103°F, headache, abdominal pain, rash, and muscle aches. RMSF is considered the most serious tick-borne illness in the United States.

Rocky Mountain spotted fever (RMSF) is not contagious from person to person. The disease requires, in most instances, transfer of bacteria from the tick bite to the individual. Infrequently, some people can become infected with the bacteria if they contact tick droppings or crushed dead ticks.

Mountainfever: A viral disease transmitted through the bite of ticks (Rocky Mountain wood tick and American dog tick) who are infected with the virus. Because the virus infects blood cells including erythrocytes, transmission can also occur through transfusion with infected blood but this is uncommon.

Rocky Mountain spotted fever (RMSF) is a tick-borne disease caused by the bacterium Rickettsia rickettsii. This illness, which is found in North, Central, and South America, is transmitted via the bite of an infected tick. The illness affects the lining of blood vessels...

Rocky Mountain spotted fever is a bacterial disease spread by ticks. It typically begins with a fever and headache, which is followed a few days later with the development of a rash. The rash is generally made up of small spots of bleeding and starts on the wrists and ankles. Other symptoms may include muscle pains and vomiting. Long-term complications following recovery may include hearing loss or loss of part of an arm or leg. The disease is caused by Rickettsia rickettsii, a type of bacterium